Home / 472,827,280.80-709,240,921.20-291,428,752.80

Finding the Fourth Proportional to 472,827,280.80, 709,240,921.20 and 291,428,752.80

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Solution

The fourth proportional to 472,827,280.80, 709,240,921.20 and 291,428,752.80 is: 437,143,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,827,280.80 : 709,240,921.20 = 291,428,752.80 : x
  2. Step 2: Convert to fraction form
    472,827,280.80/709,240,921.20 = 291,428,752.80/x
  3. Step 3: Cross multiply
    472,827,280.80x = 709,240,921.20 × 291,428,752.80
  4. Step 4: Simplify right side
    472,827,280.80x = 206,693,197,100,039,104
  5. Step 5: Solve for x
    x = 206,693,197,100,039,104/472,827,280.80
  6. Step 6: Final answer
    x = 437,143,129.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.